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Posted by orville wright on August 27, 2002 at 15:56:44: In Reply to: Cloud 9 posted by Theo on August 27, 2002 at 13:24:22: No, the feathers act as aerofoils over which air flows. The flow of air over the feather results in the Bernoulli effect which has the effect of giving lift to the bird. Bats have a large surface area which in combination with their advanced musclature helps them to fly.
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